Fischer told a conference that the current stage, exploration, entails high costs, and the costs of drilling per rig reach some $150 million.
The first exploration drill could be deployed at the end of this year or the beginning of next year, the company official added.
OMV Petrom recently obtained a five-year extension on the exploration lease held for the Neptun block.
In addition, mineral resources agency ANRM recently said it could auction off exploration licenses for another six oil and gas blocks in the Black Sea.
Company drilling for oil and gas in the Black Sea include OMV Petrom, Exxon Mobil, Lukoil and Petro Ventures Europe.
OMV Petrom is listed on the Bucharest Stock Exchange and it is 51.01% owned by Austrian oil and gas group OMV.
Petrom and Exxon concluded in 2008 an agreement on the joint exploration of the Neptun block.